I don't have room to keep all of my machines out at one time. When I have to put my serger away, instead of unthreading it, I pull about a foot of extra thread off each cone before I cut it. I then gather the extra length of threads and put them in a loose coil on top of the serger and secure it with a small piece of blue painters tape. When I need to use the serger the next time I have long enough thread tails to tie on a new color without having to rethread the entire machine. I stick the piece of painters tape tape on the side of my serger below the hand wheel wheel until I need it.